HIP6521
NOT RECOMMENDED FOR NEW DESIGNS NO RECOMMENDED REPLACEMENT
contact our Technical Support Center at 1-888-INTERS...
HIP6521
NOT RECOMMENDED FOR NEW DESIGNS NO RECOMMENDED REPLACEMENT
contact our Technical Support Center at 1-888-INTERSIL or www.intersil.com/tsc
PWM and Triple Linear Power Controller
DATASHEET
FN4837 Rev.5.00 Oct 16, 2006
The HIP6521 provides the power control and protection for four output voltages in high-performance microprocessor and computer applications. The IC integrates a voltage-mode PWM controller and three linear controllers, as well as monitoring and protection functions into a 16 Ld SOIC package. The PWM controller is intended to regulate the microprocessor memory core voltage with a synchronous-rectified buck converter. The linear controllers are intended to regulate the computer system’s AGP 1.5V bus power, the 2.5V clock power, and the 1.8V power for the North/South Bridge core voltage and/or cache memory circuits. Both the switching
regulator and linear voltage references provide 2% of static regulation over line, load, and temperature ranges. All outputs are user-adjustable by means of an external resistor divider. All linear controllers employ bipolar
NPNs for the pass
transistors.
The HIP6521 monitors all the output voltages. The PWM controller’s adjustable overcurrent function monitors the output current by using the voltage drop across the upper MOSFET’s rDS(ON). The linear
regulator outputs are monitored via the FB pins for undervoltage events.
Ordering Information
PART NUMBER
PART
TEMP.
PKG.
MARKING RANGE (°C) PACKAGE DWG. #
HIP6521CB HIP...